Backup source of Heroku (No. 1)

• Backup list
• View the diff.
• View the diff current.
• View the diff for visual.
• View the backup.
• Go to Heroku.
  • 1 (2014-11-12 (Wed) 13:28:35)
  • 2 (2015-04-05 (Sun) 00:48:49)
  • 3 (2019-08-25 (Sun) 19:20:11)

- https://heroku.com/apps
- https://dashboard.heroku.com/apps